Cylinder-hammer for jacquards.



J. L. PATTERSON.

CYLINDER HAMMER FOR JACQUARDS.

APPLICATION FILED JULYII, I914- Patemtenl Apr. 20, 1915.

THE NORRIS PETEHS 60.. PHOTO-LIT HOH WIISNINGWN. D. C.

JOHN LEGERWOOD PATTERSON, 0F ROANOKE RAPIDS, NORTH CAROLINA.

CYLTNDER-HAMMER FOR JACQUARDS.

Specification of Letters Patent.

Patented Apr. 20, 1915.

Application filed July 11, 1914:. Serial No. 850,462.

To aZZ whom it may concern:

Be it known that 1, JOHN L. PATTERSON, a citizen of the United States, residing at Roanoke Rapids, in the county of Halifax and State of North Carolina, have invented certain new and useful Improvements in Cylinder-Hammers for Jacquards, of which the following is a specification.

This invention relates to jacquards and particularly to improvements in the con struction of the cylinder hammer.

The cylinder hammer is a T-headed spring pressed plunger which bears against lugs on the cylinder and serves as an impositive stop to arrest and retain the cylinder in successive card presenting positions.

Heretofore the hammers have been cast of iron and in one piece and difficulties have been experienced arising from rapid wear, excessive cost of replacement, and the need of copious lubrication Hammers of the old type must be renewed several times a year and as this requires the removal of the cylinder, and also necessitates, in many cases, a number of tedious adjustments, the expense is heavy, both because of the cost of the work and the loss incident to shutting down the loom. Another source of loss is oil spots made in the fabric woven in the loom by oil thrown by the hammer. I have discovered that these difficulties can be obviated by making use of an inserted wearing face of nonmetallie material having a lubrieating property such as certain kinds of wood or wood impregnated with oil, and practical use of such inserts has shown that the wooden wearing face is as durable or more durable than the metal, that it requires no lubrication, and finally that it can be replaced when worn in a very few minutes time, all adjustments beingreadily made, and no dismantling of the jacquard being necessary.

I illustrate the invention in the accompanying drawings in which Figure 1 is a sectional view on the line 1-1 of Fig. 2; Fig. 2 is an elevation of the end portion of a jacquard cylinder showing my improved cylinder hammer in operative relation with the cylinder; Fig. 3 is an elevation of the head of. my improved cylinder hammer; Fig. 4: shows in perspective the insert; the retaining clips, and the recessed hammer head to receive the insert; and Fig. 5 is an elevation of a hammer head, showing a modified arrangement of the means for retaining the insert.

In the drawings 1 is the jacquard cylinder and 2 is one of the usual end castings having the customary gudgeon 8 and turning lugs 4:, with which the turning pawl and cylinder hammer engage. 5 is the bearing sleeve for the cylinder gudgeon 3, this sleeve being clamped by a set screw 6 in the reciprocating frame 7 which carries that end of the jacquard cylinder in its movements back and forth from the needles. 8 and 9 are the guides for the cylinder hammer. The parts so far described may be of any usual construction, the particular one shown being chosen for purposes of illustration only.

10 represents the stem of the cylinder hammer which is square where it passes through the guide 8 and round where it passes through the guide 9. The alinement of the head is thus preserved A coil spring 11 surrounds the lower portion'of the hammer stem and bears against the upper face of the guide 9 and against the shoulder formed by the junction of the round and square portions of the hammer stem 10, the spring 11 acting to urge the hammer stem upward and force the hammer into contact with the lugs 4 on the casting 2. The cylinder hammer is T-shaped as shown and the head 12 is provided with a recess to receive an insert 13 whose nature will be further described in detail. The opposite side of the hammer head from the aforesaid recess is provided with a rib 14 intended to retain the bow springs 15 whose form is clearly illustrated in Fig. 4. These springs or clips comprise merely contractile bows of sheet metal and two are preferably used. More or fewer of the spring clips might be used if preferred and their form might be changed, their function being merely to retain the insert 13 snugly in the recess in the hammer head. Tndentations 16 are provided in the insert 13 to receive and retain the ends of the springs 15. If preferred the insert 13 may be retained by wood screws 17 as illustrated in Fig. 5, or by other suitable means. Nhatever retaining means is used the construction should be such that the insert 13 may be removed and replaced without removing the cylinder 1 or the cylinder hammer.

In the construction shown in Figs. 1 to i the bow springs 15 are swung down to release the insert, the rib 1a preventing the springs from falling clear of the hammer but allowing them to move sufiiciently to release the insert. The necessary adjustments of the insert to secure an accurate positioning of the cylinder will be quickly made, so that replacement of the insert requires shutting down of the loom for the minimum possible time. The preferred material for the insert is lignum vitae which is peculiarly suitable because of its hardness, and the further fact that it readily glazes underfrictional contact with metal, thus acquiring a hard smooth surface. Other hard woods, for example, ash or hickory, may be used. Beneficial results are secured by soaking the Woods used in oil to impart to them a lubricating property, but this is not so necessary in the case of lignum vitae as this wood seems to possess of itself to a certain extent v an inherent lubricating property.

I also contemplate the use of various nonmetallic materials which may be found to possess desirable lubricating and Wear-resisting properties, and therefore do not limit myself to the materials mentioned except as specifically stated in the claims.

The invention involves no change in the loom construction except in a single part which under present conditions requires frequent replacement. It reduces the time and cost hitherto incident to replacement of the worn part, and eliminates a prolific source of oil spotting. Use under the conditions of actual service shows that the wooden wearing surface is at least as durable as the metal heretofore used.

Having thus described my invention, what I claim is 1. The combination with a jacquard cylinder, of a cylinder hammer adapted to coact therewith to arrest said cylinder in card presenting positions and comprising, a guidingmember, and-a removable head portion carried thereby in coactive relation with said cylinder.

2. The combination witha jacquard cylinder, of a cylinder hammer adapted to coact therewith to arrest said cylinder in card presenting positions and comprising, a guiding member, and a removable head portion of non-metallic material carried thereby in coactive relation with said cylinder.

3. The combination with a jacquard cylinder, of a cylinder hammer adapted to coact therewith to arrest said cylinder in card presenting positions and comprising, a guiding member, and a removable head portion of wood carried thereby in coactive relation with said cylinder.

4. The combination with a jacquard cylinder, of a cylinder hammer adapted to coact therewith to arrest said cylinder in card presenting positions and comprising, a guiding member, and a removable head portion of wood impregnated with oil carried thereby in coactive relation with said cylinder.

5. The combination with a jacquard cylinder, of a cylinder hammer adapted to coact therewith to arrest said cylinder in card presenting positions and comprising, a guiding member, and a removable head portion of lignum vitae carried thereby in coactive relation with said cylinder.

6. The combination with a jacquard cylinder, of a cylinder hammer adapted to coact therewith to arrest said cylinder in card presenting positions and comprising, a guiding member, and a removable head portion of non-metallic material having a lubricating property carried thereby in coactive relation with said cylinder.

7. The combination with a jacquard cylinder, of a cylinder hammer adapted to coact therewith to arrest said cylinder in card presenting positions and comprising a guiding means having a socketcd head, a nonmetallic insert mounted in the socket of said head in coactive relation with said cylinder, and a spring clip adapted releasably to retain said insert in said socket.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

V. S. HYAMS, M. L. RonrsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

